Stub out and test system notifications.

This change abstracts NotificationManager interactions behind
SystemFacade and takes advantage of that to test notifications, to a
limited degree.

It also fixes a silly typo in AbstractDownloadManagerFunctionalTest,
and it introduces an extra sleep between tests to avoid some
flakiness.  I'll look for a better solution to that problem after this
change goes in.

Change-Id: I3a0307f828955cd45b0e3581ad499da28cc0556e

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/src/com/android/providers/downloads/FakeSystemFacade.java b/tests/src/com/android/providers/downloads/FakeSystemFacade.java
index 0f8a9801..d35b558b 100644
--- a/tests/src/com/android/providers/downloads/FakeSystemFacade.java
+++ b/tests/src/com/android/providers/downloads/FakeSystemFacade.java
@@ -1,11 +1,15 @@
 package com.android.providers.downloads;
 
+import android.app.Notification;
 import android.content.Intent;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.net.ConnectivityManager;
+import android.test.AssertionFailedError;
 
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 public class FakeSystemFacade implements SystemFacade {
     long mTimeMillis = 0;
@@ -13,6 +17,8 @@ public class FakeSystemFacade implements SystemFacade {
     boolean mIsRoaming = false;
     Integer mMaxBytesOverMobile = null;
     List<Intent> mBroadcastsSent = new ArrayList<Intent>();
+    Map<Integer,Notification> mActiveNotifications = new HashMap<Integer,Notification>();
+    List<Notification> mCanceledNotifications = new ArrayList<Notification>();
 
     void incrementTimeMillis(long delta) {
         mTimeMillis += delta;
@@ -43,4 +49,27 @@ public class FakeSystemFacade implements SystemFacade {
     public boolean userOwnsPackage(int uid, String pckg) throws NameNotFoundException {
         return true;
     }
+
+    @Override
+    public void postNotification(int id, Notification notification) {
+        if (notification == null) {
+            throw new AssertionFailedError("Posting null notification");
+        }
+        mActiveNotifications.put(id, notification);
+    }
+
+    @Override
+    public void cancelNotification(int id) {
+        Notification notification = mActiveNotifications.remove(id);
+        if (notification != null) {
+            mCanceledNotifications.add(notification);
+        }
+    }
+
+    @Override
+    public void cancelAllNotifications() {
+        for (int id : mActiveNotifications.keySet()) {
+            cancelNotification(id);
+        }
+    }
 }